The Transylvania Tunnel is a silver mine located in Custer county, Colorado at an elevation of 9,350 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 9,350 Feet (2,850 Meters)
Commodity: Silver
Lat, Long: 38.10556, -105.33722
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Transylvania Tunnel MRDS details
Site Name
Primary: Transylvania Tunnel
Commodity
Primary: Silver
Secondary: Lead
Secondary: Zinc
Location
State: Colorado
County: Custer
District: Rosita
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Underground
Discovery Year: 1895
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Rosita Volcanic Center, Wet Mtns
Type: L
Description: Rosita Fault, Ne-Trending Fault
Alterations
Alteration Type: L
Alteration Text: Argillization
Rocks
Name: Trachyte
Role: Associated
Age Type: Host Rock
Age Young: Oligocene
Name: Trachyte
Role: Associated
Age Type: Associated Rock
Age Young: Miocene
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Galena
Gangue: Kaolin
Comments
Comment (Location): SE SLOPE OF POCAHONTAS HILL ; INFO FROM LAND.ST :(1976)
Comment (Deposit): TUNNEL DRIVEN AT RIGHT ANGLE TO DIKE OF SPHERULITIC RHYOLITE
Comment (Workings): TUNNEL, SHAFT NEAR MOUTH OF TUNNEL, DRIFT OFF OF SHAFT
References
Reference (Deposit): CROSS, WHITMAN, 1896, GEOLOGY OF SILVER CLIFF AND THE ROSITA HILLS, COLORADO: USGS 17TH ANN. REPORT, PT 2, P. 263-403.
Reference (Deposit): SHARP, W.M., 1978, GEOLOGIC MAP OF THE SILVER CLIFF AND ROSITA VOLCANIC CENTERS, CUSTER COUNTY, COLORADO: USGS MAP I-1081.
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
